用JFreeChart实现指南针

指南针的实现

import java.awt.BorderLayout;import java.awt.Color;import java.awt.Dimension;import java.awt.GridBagConstraints;import java.awt.GridBagLayout;import java.awt.GridLayout;import java.awt.Insets;import java.awt.Toolkit;import java.awt.event.ActionEvent;import java.beans.PropertyChangeEvent;import java.beans.PropertyChangeListener;import javax.swing.JCheckBox;import javax.swing.JComboBox;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.SwingConstants;import javax.swing.border.TitledBorder;import org.jfree.chart.ChartPanel;import org.jfree.chart.JFreeChart;import org.jfree.chart.plot.CompassPlot;import org.jfree.data.general.DefaultValueDataset;import org.jfree.ui.Spinner;/** * A demo application showing how to use the {@link CompassPlot} class. * 指南针 * @author Bryan Scott */public class CompassDemo extends JPanel {    /** Whether to output messages to the console **/    public static final boolean DEBUG = true;    /** The available needle types. */    public static final String[] NEEDLE_TYPES        = {"Arrow", "Line", "Long", "Pin", "Plum", "Pointer", "Ship", "Wind", "Arrow"};    /** Dataset 1. */    private DefaultValueDataset compassData = new DefaultValueDataset(new Double(0.0));    /** Dataset 2. */    private DefaultValueDataset shipData = new DefaultValueDataset(new Double(0.0));    /** The compass plot. */    private CompassPlot compassPlot = new CompassPlot(this.compassData);    /** The chart. */    private JFreeChart compassChart = new JFreeChart("Compass Test",                                                     JFreeChart.DEFAULT_TITLE_FONT,                                                     this.compassPlot, false);    /** The chart panel. */    private ChartPanel panelCompass = new ChartPanel(this.compassChart);    /** A grid layout. */    private GridLayout gridLayout1 = new GridLayout();    /** A panel. */    private JPanel panelCompassHolder = new JPanel();    /** A border layout. */    private BorderLayout borderLayout = new BorderLayout();    /** A panel. */    private JPanel jPanel12 = new JPanel();    /** A checkbox. */    private JCheckBox windNullCheckBox = new JCheckBox();    /** A checkbox. */    private JCheckBox shipNullCheckBox = new JCheckBox();    // SpinnerNumberModel modelWind = new SpinnerNumberModel(0, -1, 361, 1);    // SpinnerNumberModel modelShip = new SpinnerNumberModel(0, -1, 361, 1);    // JSpinner spinWind = new JSpinner(modelWind);    // JSpinner spinShip = new JSpinner(modelShip);    /** The wind spinner control. */    private Spinner spinWind = new Spinner(270);    /** The ship spinner control. */    private Spinner spinShip = new Spinner(45);    /** A panel. */    private JPanel jPanel1 = new JPanel();    /** A combo box. */    private JComboBox pick1Pointer = new JComboBox(CompassDemo.NEEDLE_TYPES);    /** A panel. */    private JPanel jPanel2 = new JPanel();    /** A combo box. */    private JComboBox pick2Pointer = new JComboBox(CompassDemo.NEEDLE_TYPES);    /** A titled border. */    private TitledBorder titledBorder1;    /** A titled border. */    private TitledBorder titledBorder2;    /** A grid bag layout. */    private GridBagLayout gridBagLayout1 = new GridBagLayout();    /** A grid bag layout. */    private GridBagLayout gridBagLayout2 = new GridBagLayout();    /** A titled border. */    private TitledBorder titledBorder3;    /** A grid layout. */    private GridLayout gridLayout2 = new GridLayout();    /**     * Default constructor.     */    public CompassDemo() {        try {            //this.compassPlot.addData(this.compassData);            this.compassPlot.addDataset(this.shipData);            this.compassPlot.setSeriesNeedle(0, 7);            this.compassPlot.setSeriesNeedle(1, 5);            this.compassPlot.setSeriesPaint(0, Color.blue);            this.compassPlot.setSeriesOutlinePaint(0, Color.blue);            this.compassPlot.setSeriesPaint(1, Color.red);            this.compassPlot.setSeriesOutlinePaint(1, Color.red);            this.pick1Pointer.setSelectedIndex(7);            this.pick2Pointer.setSelectedIndex(5);            jbInit();        }        catch (Exception ex) {            ex.printStackTrace();        }    }    /**     * Initialises the user interface.     *     * @throws Exception if there are any exceptions.     */    public void jbInit() throws Exception {        this.titledBorder1 = new TitledBorder("");        this.titledBorder2 = new TitledBorder("");        this.titledBorder3 = new TitledBorder("");        setLayout(this.gridLayout1);        this.panelCompassHolder.setLayout(this.borderLayout);        this.windNullCheckBox.setHorizontalTextPosition(SwingConstants.LEADING);        this.windNullCheckBox.setText("Null");        this.windNullCheckBox.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(final ActionEvent e) {                checkWindNullActionPerformed(e);            }        });        this.shipNullCheckBox.setHorizontalTextPosition(SwingConstants.LEFT);        this.shipNullCheckBox.setText("Null");        this.shipNullCheckBox.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(final ActionEvent e) {                checkShipNullActionPerformed(e);            }        });        this.spinShip.addPropertyChangeListener(new PropertyChangeListener() {            public void propertyChange(final PropertyChangeEvent evt) {              if (DEBUG) {                System.out.println("compassDemo:spinShipPropertyChange");              }              final Spinner spinner = (Spinner) evt.getSource();              if (spinner.isEnabled()) {                shipData.setValue(new Double(spinner.getValue()));              }            }        });        this.spinWind.addPropertyChangeListener(new PropertyChangeListener() {            public void propertyChange(final PropertyChangeEvent evt) {                if (DEBUG) {                  System.out.println("compassDemo:spinWindPropertyChange");                }                  final Spinner spinner = (Spinner) evt.getSource();                if (spinner.isEnabled()) {                  compassData.setValue(new Double(spinner.getValue()));                }            }        });        this.jPanel12.setLayout(this.gridLayout2);        this.jPanel2.setBorder(this.titledBorder1);        this.jPanel2.setLayout(this.gridBagLayout2);        this.jPanel1.setBorder(this.titledBorder2);        this.jPanel1.setLayout(this.gridBagLayout1);        this.titledBorder1.setTitle("Second Pointer");        this.titledBorder2.setTitle("First Pointer");        this.titledBorder3.setTitle("Plot Options");        this.pick2Pointer.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(final ActionEvent e) {                pick2PointerActionPerformed(e);            }        });        this.pick1Pointer.addActionListener(new java.awt.event.ActionListener() {            public void actionPerformed(final ActionEvent e) {                pick1PointerActionPerformed(e);            }        });        add(this.panelCompassHolder, null);        this.panelCompassHolder.add(this.jPanel12, BorderLayout.SOUTH);        this.jPanel12.add(this.jPanel1, null);        this.jPanel1.add(this.pick1Pointer,                    new GridBagConstraints(0, 0, 1, 1, 1.0, 0.0,                                           GridBagConstraints.CENTER,                                           GridBagConstraints.HORIZONTAL,                                           new Insets(0, 0, 0, 0),                                           0, 0));        this.jPanel1.add(this.windNullCheckBox,                    new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0,                                           GridBagConstraints.CENTER,                                           GridBagConstraints.NONE,                                           new Insets(0, 0, 0, 0),                                           0, 0));        this.jPanel1.add(this.spinWind,                    new GridBagConstraints(2, 0, 1, 1, 1.0, 0.0,                                           GridBagConstraints.CENTER,                                           GridBagConstraints.BOTH,                                           new Insets(0, 0, 0, 0),                                           0, 0));        this.jPanel12.add(this.jPanel2, null);        this.jPanel2.add(this.pick2Pointer,                    new GridBagConstraints(0, 0, 1, 1, 1.0, 0.0,                                           GridBagConstraints.CENTER,                                           GridBagConstraints.HORIZONTAL,                                           new Insets(0, 0, 0, 0),                                           0, 0));        this.jPanel2.add(this.shipNullCheckBox,                    new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0,                                           GridBagConstraints.CENTER,                                           GridBagConstraints.NONE,                                           new Insets(0, 0, 0, 0),                                           0, 0));        this.jPanel2.add(this.spinShip,                    new GridBagConstraints(2, 0, 1, 1, 1.0, 0.0,                    GridBagConstraints.CENTER,                    GridBagConstraints.BOTH,                    new Insets(0, 0, 0, 0),                    0, 0));        this.panelCompassHolder.add(this.panelCompass, BorderLayout.CENTER);    }    /**     * Entry point for the demo application.     *     * @param args  ignored.     */    public static void main(final String[] args) {        final CompassDemo panel = new CompassDemo();        final JFrame frame = new JFrame();        frame.getContentPane().setLayout(new BorderLayout(5, 5));        frame.setDefaultCloseOperation(3);        frame.setTitle("Compass Demo");        frame.getContentPane().add(panel, BorderLayout.CENTER);        frame.setSize(700, 400);        final Dimension d = Toolkit.getDefaultToolkit().getScreenSize();        frame.setLocation((d.width - frame.getSize().width) / 2,                          (d.height - frame.getSize().height) / 2);        frame.setVisible(true);    }    // ****************************************************************************    // * JFREECHART DEVELOPER GUIDE                                               *    // * The JFreeChart Developer Guide, written by David Gilbert, is available   *    // * to purchase from Object Refinery Limited:                                *    // *                                                                          *    // * http://www.object-refinery.com/jfreechart/guide.html                     *    // *                                                                          *    // * Sales are used to provide funding for the JFreeChart project - please    *    // * support us so that we can continue developing free software.             *    // ****************************************************************************    /**     * Updates the data.     *     * @param value  the value.     */    public void adjustData(final double value) {        final Number val = this.compassData.getValue();        double newVal = value;        if (val != null) {            newVal += val.doubleValue();        }        if (newVal > 360) {            newVal = 0;        }        if (newVal < 0) {            newVal = 360;        }        this.compassData.setValue(new Double(newVal));    }    /**     * Handles an action event.     *     * @param e  the event.     */    public void checkWindNullActionPerformed(final ActionEvent e) {        if (CompassDemo.DEBUG) {            System.out.println("CompassDemo:checkWindNull: " + this.windNullCheckBox.isSelected());        }        if (this.windNullCheckBox.isSelected()) {            this.compassData.setValue(null);            this.spinWind.setEnabled(false);        }        else {            //  compassData.setValue((new Double(((Integer)spinWind.getValue()).intValue())));            this.compassData.setValue(new Double(this.spinWind.getValue()));            this.spinWind.setEnabled(true);        }        if (CompassDemo.DEBUG) {          System.out.println("CompassDemo:checkWindNull: " + this.compassData.getValue());        }              }    /**     * Handles an action event.     *     * @param e  the event.     */    public void checkShipNullActionPerformed(final ActionEvent e) {        if (CompassDemo.DEBUG) {            System.out.println("CompassDemo:checkShipNull: " + this.shipNullCheckBox.isSelected());        }        if (this.shipNullCheckBox.isSelected()) {            this.shipData.setValue(null);            this.spinShip.setEnabled(false);        }        else {           // shipData.setValue((new Double(((Integer)spinShip.getValue()).intValue())));            this.shipData.setValue(new Double(this.spinShip.getValue()));            this.spinShip.setEnabled(true);        }    }    /**     * Handles an action event.     *     * @param e  the event.     */    public void pick2PointerActionPerformed(final ActionEvent e) {      if (CompassDemo.DEBUG) {        System.out.println("compassDemo:pick2PointActionPerformed " + e.getActionCommand() + ",");      }      this.compassPlot.setSeriesNeedle(1, this.pick2Pointer.getSelectedIndex());      this.compassPlot.setSeriesPaint(1, Color.red);      this.compassPlot.setSeriesOutlinePaint(1, Color.red);    }    /**     * Handles an action event.     *     * @param e  the event.     */    public void pick1PointerActionPerformed(final ActionEvent e) {        if (CompassDemo.DEBUG) {          System.out.println("compassDemo:pick1PointActionPerformed " + e.getActionCommand() + ",");        }                this.compassPlot.setSeriesNeedle(0, this.pick1Pointer.getSelectedIndex());        this.compassPlot.setSeriesPaint(0, Color.blue);        this.compassPlot.setSeriesOutlinePaint(0, Color.blue);    }}